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Title: Macroscopic kinetic investigations on mixed natural gas hydrate formation for gas storage application
Authors: Veluswamy, Hari Prakash
Bhattacharjee G.
Liao J.
Linga P.
Published in: Energy and Fuels
Abstract: Solidified natural gas (SNG) technology via clathrate hydrates is a promising technology for the long-term and large-scale storage of natural gas, owing to multifaceted benefits offered, including environmentally benign, compact, and safest mode of gas storage in comparison to conventional methods. In this study, we investigate the macroscopic kinetics of natural gas hydrate formation using a C1 (93%)−C2 (5%)−C3 (2%) gas mixture. The main objective is to examine the effect of the presence of low concentrations of higher hydrocarbons (ethane and propane) in influencing the natural gas hydrate formation kinetics along with the additional presence of a thermodynamic promoter, tetrahydrofuran. Experiments were performed to study the effect of pressure (driving force) on the mixed natural gas hydrate formation kinetics in an unstirred reactor configuration. Plausibility of the improvement in kinetics of mixed natural gas hydrate formation in the presence of an amino acid (kinetic promoter) was also attempted. Concentration of 300 ppm of tryptophan was found to be effective in enhancing the mixed natural hydrate formation kinetics at experimental conditions of 283.2 K and 5.0 MPa, albeit a minor drop in gas uptake. Results from this study will be helpful in advancing the SNG technology toward commercial implementation.
Citation: Energy and Fuels(2020), 34(12): 15257-15269
Issue Date: 2020
Publisher: American Chemical Society
ISSN: 8870624
Author Scopus IDs: 55603750900
Author Affiliations: Veluswamy, H.P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore, Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Funding Details: .Energy Market Authority of Singapore, EMA: R-279-000-542-114.The work was funded in part under the Energy Innovation Research Programme (EIRP, Award NRF2015EWTEIRP002-002), administrated by the Energy Market Authority (EMA) of Singapore and MoE Tier 1 AcRF (R-279-000-542-114). The EIRP is a competitive grant call i
Corresponding Author: Veluswamy, H.P.; Department of Chemical and Biomolecular Engineering, Singapore; email:
Appears in Collections:Journal Publications [CH]

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